sharp

# Changelog ### v0.23 - "*vision*" Requires libvips v8.8.1. #### v0.23.4 - 5th December 2019 * Handle zero-length Buffer objects when using Node.js v13.2.0+. * Expose raw TIFFTAG_PHOTOSHOP metadata. [#1600](https://github.com/lovell/sharp/issues/1600) * Improve thread safety by using copy-on-write when updating metadata. [#1986](https://github.com/lovell/sharp/issues/1986) #### v0.23.3 - 17th November 2019 * Ensure `trim` operation supports images contained in the alpha channel. [#1597](https://github.com/lovell/sharp/issues/1597) * Ensure tile `overlap` option works as expected. [#1921](https://github.com/lovell/sharp/pull/1921) [@rustyguts](https://github.com/rustyguts) * Allow compilation on FreeBSD and variants (broken since v0.23.0) [#1952](https://github.com/lovell/sharp/pull/1952) [@pouya-eghbali](https://github.com/pouya-eghbali) * Ensure `modulate` and other colour-based operations can co-exist. [#1958](https://github.com/lovell/sharp/issues/1958) #### v0.23.2 - 28th October 2019 * Add `background` option to tile output operation. [#1924](https://github.com/lovell/sharp/pull/1924) [@neave](https://github.com/neave) * Add support for Node.js 13. [#1932](https://github.com/lovell/sharp/pull/1932) [@MayhemYDG](https://github.com/MayhemYDG) #### v0.23.1 - 26th September 2019 * Ensure `sharp.format.vips` is present and correct (filesystem only). [#1813](https://github.com/lovell/sharp/issues/1813) * Ensure invalid `width` and `height` provided as options to `resize` throw. [#1817](https://github.com/lovell/sharp/issues/1817) * Allow use of 'heic' and 'heif' identifiers with `toFormat`. [#1834](https://github.com/lovell/sharp/pull/1834) [@jaubourg](https://github.com/jaubourg) * Add `premultiplied` option to `composite` operation. [#1835](https://github.com/lovell/sharp/pull/1835) [@Andargor](https://github.com/Andargor) * Allow instance reuse with differing `toBuffer` options. [#1860](https://github.com/lovell/sharp/pull/1860) [@RaboliotTheGrey](https://github.com/RaboliotTheGrey) * Ensure image is at least 3x3 pixels before attempting trim operation. #### v0.23.0 - 29th July 2019 * Remove `overlayWith` previously deprecated in v0.22.0. * Add experimental support for HEIF images. Requires libvips compiled with libheif. [#1105](https://github.com/lovell/sharp/issues/1105) * Expose libwebp `smartSubsample` and `reductionEffort` options. [#1545](https://github.com/lovell/sharp/issues/1545) * Add experimental support for Worker Threads. [#1558](https://github.com/lovell/sharp/issues/1558) * Use libvips' built-in CMYK and sRGB profiles when required. [#1619](https://github.com/lovell/sharp/issues/1619) * Drop support for Node.js versions 6 and 11. [#1674](https://github.com/lovell/sharp/issues/1674) * Expose `skipBlanks` option for tile-based output. [#1687](https://github.com/lovell/sharp/pull/1687) [@RaboliotTheGrey](https://github.com/RaboliotTheGrey) * Allow use of `failOnError` option with Stream-based input. [#1691](https://github.com/lovell/sharp/issues/1691) * Fix rotate/extract ordering for non-90 angles. [#1755](https://github.com/lovell/sharp/pull/1755) [@iovdin](https://github.com/iovdin) ### v0.22 - "*uptake*" Requires libvips v8.7.4. #### v0.22.1 - 25th April 2019 * Add `modulate` operation for brightness, saturation and hue. [#1601](https://github.com/lovell/sharp/pull/1601) [@Goues](https://github.com/Goues) * Improve help messaging should `require("sharp")` fail. [#1638](https://github.com/lovell/sharp/pull/1638) [@sidharthachatterjee](https://github.com/sidharthachatterjee) * Add support for Node 12. [#1668](https://github.com/lovell/sharp/issues/1668) #### v0.22.0 - 18th March 2019 * Remove functions previously deprecated in v0.21.0: `background`, `crop`, `embed`, `ignoreAspectRatio`, `max`, `min` and `withoutEnlargement`. * Add `composite` operation supporting multiple images and blend modes; deprecate `overlayWith`. [#728](https://github.com/lovell/sharp/issues/728) * Add support for `pages` input option for multi-page input. [#1566](https://github.com/lovell/sharp/issues/1566) * Allow Stream-based input of raw pixel data. [#1579](https://github.com/lovell/sharp/issues/1579) * Add support for `page` input option to GIF and PDF. [#1595](https://github.com/lovell/sharp/pull/1595) [@ramiel](https://github.com/ramiel) ### v0.21 - "*teeth*" Requires libvips v8.7.0. #### v0.21.3 - 19th January 2019 * Input image decoding now fails fast, set `failOnError` to change this behaviour. * Failed filesystem-based input now separates missing file and invalid format errors. [#1542](https://github.com/lovell/sharp/issues/1542) #### v0.21.2 - 13th January 2019 * Ensure all metadata is removed from PNG output unless `withMetadata` used. * Ensure shortest edge is at least one pixel after resizing. [#1003](https://github.com/lovell/sharp/issues/1003) * Add `ensureAlpha` operation to add an alpha channel, if missing. [#1153](https://github.com/lovell/sharp/issues/1153) * Expose `pages` and `pageHeight` metadata for multi-page input images. [#1205](https://github.com/lovell/sharp/issues/1205) * Expose PNG output options requiring libimagequant. [#1484](https://github.com/lovell/sharp/issues/1484) * Expose underlying error message for invalid input. [#1505](https://github.com/lovell/sharp/issues/1505) * Prevent mutatation of options passed to `jpeg`. [#1516](https://github.com/lovell/sharp/issues/1516) * Ensure forced output format applied correctly when output chaining. [#1528](https://github.com/lovell/sharp/issues/1528) #### v0.21.1 - 7th December 2018 * Install: support `sharp_dist_base_url` npm config, like existing `SHARP_DIST_BASE_URL`. [#1422](https://github.com/lovell/sharp/pull/1422) [@SethWen](https://github.com/SethWen) * Ensure `channel` metadata is correct for raw, greyscale output. [#1425](https://github.com/lovell/sharp/issues/1425) * Add support for the "mitchell" kernel for image reductions. [#1438](https://github.com/lovell/sharp/pull/1438) [@Daiz](https://github.com/Daiz) * Allow separate parameters for gamma encoding and decoding. [#1439](https://github.com/lovell/sharp/pull/1439) [@Daiz](https://github.com/Daiz) * Build prototype with `Object.assign` to allow minification. [#1475](https://github.com/lovell/sharp/pull/1475) [@jaubourg](https://github.com/jaubourg) * Expose libvips' recombination matrix operation. [#1477](https://github.com/lovell/sharp/pull/1477) [@fromkeith](https://github.com/fromkeith) * Expose libvips' pyramid/tile options for TIFF output. [#1483](https://github.com/lovell/sharp/pull/1483) [@mbklein](https://github.com/mbklein) #### v0.21.0 - 4th October 2018 * Deprecate the following resize-related functions: `crop`, `embed`, `ignoreAspectRatio`, `max`, `min` and `withoutEnlargement`. Access to these is now via options passed to the `resize` function. For example: `embed('north')` is now `resize(width, height, { fit: 'contain', position: 'north' })`, `crop('attention')` is now `resize(width, height, { fit: 'cover', position: 'attention' })`, `max().withoutEnlargement()` is now `resize(width, height, { fit: 'inside', withoutEnlargement: true })`. [#1135](https://github.com/lovell/sharp/issues/1135) * Deprecate the `background` function. Per-operation `background` options added to `resize`, `extend` and `flatten` operations. [#1392](https://github.com/lovell/sharp/issues/1392) * Add `size` to `metadata` response (Stream and Buffer input only). [#695](https://github.com/lovell/sharp/issues/695) * Switch from custom trim operation to `vips_find_trim`. [#914](https://github.com/lovell/sharp/issues/914) * Add `chromaSubsampling` and `isProgressive` properties to `metadata` response. [#1186](https://github.com/lovell/sharp/issues/1186) * Drop Node 4 support. [#1212](https://github.com/lovell/sharp/issues/1212) * Enable SIMD convolution by default. [#1213](https://github.com/lovell/sharp/issues/1213) * Add experimental prebuilt binaries for musl-based Linux. [#1379](https://github.com/lovell/sharp/issues/1379) * Add support for arbitrary rotation angle via vips_rotate. [#1385](https://github.com/lovell/sharp/pull/1385) [@freezy](https://github.com/freezy) ### v0.20 - "*prebuild*" Requires libvips v8.6.1. #### v0.20.8 - 5th September 2018 * Avoid race conditions when creating directories during installation. [#1358](https://github.com/lovell/sharp/pull/1358) [@ajhool](https://github.com/ajhool) * Accept floating point values for input density parameter. [#1362](https://github.com/lovell/sharp/pull/1362) [@aeirola](https://github.com/aeirola) #### v0.20.7 - 21st August 2018 * Use copy+unlink if rename operation fails during installation. [#1345](https://github.com/lovell/sharp/issues/1345) #### v0.20.6 - 20th August 2018 * Add removeAlpha operation to remove alpha channel, if any. [#1248](https://github.com/lovell/sharp/issues/1248) * Expose mozjpeg quant_table flag. [#1285](https://github.com/lovell/sharp/pull/1285) [@rexxars](https://github.com/rexxars) * Allow full WebP alphaQuality range of 0-100. [#1290](https://github.com/lovell/sharp/pull/1290) [@sylvaindumont](https://github.com/sylvaindumont) * Cache libvips binaries to reduce re-install time. [#1301](https://github.com/lovell/sharp/issues/1301) * Ensure vendor platform mismatch throws error at install time. [#1303](https://github.com/lovell/sharp/issues/1303) * Improve install time error messages for FreeBSD users. [#1310](https://github.com/lovell/sharp/issues/1310) * Ensure extractChannel works with 16-bit images. [#1330](https://github.com/lovell/sharp/issues/1330) * Expose depth option for tile-based output. [#1342](https://github.com/lovell/sharp/pull/1342) [@alundavies](https://github.com/alundavies) * Add experimental entropy field to stats response. #### v0.20.5 - 27th June 2018 * Expose libjpeg optimize_coding flag. [#1265](https://github.com/lovell/sharp/pull/1265) [@tomlokhorst](https://github.com/tomlokhorst) #### v0.20.4 - 20th June 2018 * Prevent possible rounding error when using shrink-on-load and 90/270 degree rotation. [#1241](https://github.com/lovell/sharp/issues/1241) [@anahit42](https://github.com/anahit42) * Ensure extractChannel sets correct single-channel colour space interpretation. [#1257](https://github.com/lovell/sharp/issues/1257) [@jeremychone](https://github.com/jeremychone) #### v0.20.3 - 29th May 2018 * Fix tint operation by ensuring LAB interpretation and allowing negative values. [#1235](https://github.com/lovell/sharp/issues/1235) [@wezside](https://github.com/wezside) #### v0.20.2 - 28th April 2018 * Add tint operation to set image chroma. [#825](https://github.com/lovell/sharp/pull/825) [@rikh42](https://github.com/rikh42) * Add environment variable to ignore globally-installed libvips. [#1165](https://github.com/lovell/sharp/pull/1165) [@oncletom](https://github.com/oncletom) * Add support for page selection with multi-page input (GIF/TIFF). [#1204](https://github.com/lovell/sharp/pull/1204) [@woolite64](https://github.com/woolite64) * Add support for Group4 (CCITTFAX4) compression with TIFF output. [#1208](https://github.com/lovell/sharp/pull/1208) [@woolite64](https://github.com/woolite64) #### v0.20.1 - 17th March 2018 * Improve installation experience when a globally-installed libvips below the minimum required version is found. [#1148](https://github.com/lovell/sharp/issues/1148) * Prevent smartcrop error when cumulative rounding is below target size. [#1154](https://github.com/lovell/sharp/issues/1154) [@ralrom](https://github.com/ralrom) * Expose libvips' median filter operation. [#1161](https://github.com/lovell/sharp/pull/1161) [@BiancoA](https://github.com/BiancoA) #### v0.20.0 - 5th March 2018 * Add support for prebuilt sharp binaries on common platforms. [#186](https://github.com/lovell/sharp/issues/186) ### v0.19 - "*suit*" Requires libvips v8.6.1. #### v0.19.1 - 24th February 2018 * Expose libvips' linear transform feature. [#1024](https://github.com/lovell/sharp/pull/1024) [@3epnm](https://github.com/3epnm) * Expose angle option for tile-based output. [#1121](https://github.com/lovell/sharp/pull/1121) [@BiancoA](https://github.com/BiancoA) * Prevent crop operation when image already at or below target dimensions. [#1134](https://github.com/lovell/sharp/issues/1134) [@pieh](https://github.com/pieh) #### v0.19.0 - 11th January 2018 * Expose offset coordinates of strategy-based crop. [#868](https://github.com/lovell/sharp/issues/868) [@mirohristov-com](https://github.com/mirohristov-com) * PNG output now defaults to adaptiveFiltering=false, compressionLevel=9 [#872](https://github.com/lovell/sharp/issues/872) [@wmertens](https://github.com/wmertens) * Add stats feature for pixel-derived image statistics. [#915](https://github.com/lovell/sharp/pull/915) [@rnanwani](https://github.com/rnanwani) * Add failOnError option to fail-fast on bad input image data. [#976](https://github.com/lovell/sharp/pull/976) [@mceachen](https://github.com/mceachen) * Resize: switch to libvips' implementation, make fastShrinkOnLoad optional, remove interpolator and centreSampling options. [#977](https://github.com/lovell/sharp/pull/977) [@jardakotesovec](https://github.com/jardakotesovec) * Attach finish event listener to a clone only for Stream-based input. [#995](https://github.com/lovell/sharp/issues/995) [@whmountains](https://github.com/whmountains) * Add tilecache before smartcrop to avoid over-computation of previous operations. [#1028](https://github.com/lovell/sharp/issues/1028) [@coffeebite](https://github.com/coffeebite) * Prevent toFile extension taking precedence over requested format. [#1037](https://github.com/lovell/sharp/issues/1037) [@tomgallagher](https://github.com/tomgallagher) * Add support for gravity option to existing embed feature. [#1038](https://github.com/lovell/sharp/pull/1038) [@AzureByte](https://github.com/AzureByte) * Expose IPTC and XMP metadata when available. [#1079](https://github.com/lovell/sharp/pull/1079) [@oaleynik](https://github.com/oaleynik) * TIFF output: switch default predictor from 'none' to 'horizontal' to match libvips' behaviour. ### v0.18 - "*ridge*" Requires libvips v8.5.5. #### v0.18.4 - 18th September 2017 * Ensure input Buffer really is marked as Persistent, prevents mark-sweep GC. [#950](https://github.com/lovell/sharp/issues/950) [@lfdoherty](https://github.com/lfdoherty) #### v0.18.3 - 13th September 2017 * Skip shrink-on-load when trimming. [#888](https://github.com/lovell/sharp/pull/888) [@kleisauke](https://github.com/kleisauke) * Migrate from got to simple-get for basic auth support. [#945](https://github.com/lovell/sharp/pull/945) [@pbomb](https://github.com/pbomb) #### v0.18.2 - 1st July 2017 * Expose libvips' xres and yres properties for TIFF output. [#828](https://github.com/lovell/sharp/pull/828) [@YvesBos](https://github.com/YvesBos) * Ensure flip and flop operations work with auto-rotate. [#837](https://github.com/lovell/sharp/issues/837) [@rexxars](https://github.com/rexxars) * Allow binary download URL override via SHARP_DIST_BASE_URL env variable. [#841](https://github.com/lovell/sharp/issues/841) * Add support for Solus Linux. [#857](https://github.com/lovell/sharp/pull/857) [@ekremkaraca](https://github.com/ekremkaraca) #### v0.18.1 - 30th May 2017 * Remove regression from #781 that could cause incorrect shrink calculation. [#831](https://github.com/lovell/sharp/issues/831) [@suprMax](https://github.com/suprMax) #### v0.18.0 - 30th May 2017 * Remove the previously-deprecated output format "option" functions: quality, progressive, compressionLevel, withoutAdaptiveFiltering, withoutChromaSubsampling, trellisQuantisation, trellisQuantization, overshootDeringing, optimiseScans and optimizeScans. * Ensure maximum output dimensions are based on the format to be used. [#176](https://github.com/lovell/sharp/issues/176) [@stephanebachelier](https://github.com/stephanebachelier) * Avoid costly (un)premultiply when using overlayWith without alpha channel. [#573](https://github.com/lovell/sharp/issues/573) [@strarsis](https://github.com/strarsis) * Include pixel depth (e.g. "uchar") when reading metadata. [#577](https://github.com/lovell/sharp/issues/577) [@moedusa](https://github.com/moedusa) * Add support for Buffer and Stream-based TIFF output. [#587](https://github.com/lovell/sharp/issues/587) [@strarsis](https://github.com/strarsis) * Expose warnings from libvips via NODE_DEBUG=sharp environment variable. [#607](https://github.com/lovell/sharp/issues/607) [@puzrin](https://github.com/puzrin) * Switch to the libvips implementation of "attention" and "entropy" crop strategies. [#727](https://github.com/lovell/sharp/issues/727) * Improve performance and accuracy of nearest neighbour integral upsampling. [#752](https://github.com/lovell/sharp/issues/752) [@MrIbby](https://github.com/MrIbby) * Constructor single argument API: allow plain object, reject null/undefined. [#768](https://github.com/lovell/sharp/issues/768) [@kub1x](https://github.com/kub1x) * Ensure ARM64 pre-built binaries use correct C++11 ABI version. [#772](https://github.com/lovell/sharp/issues/772) [@ajiratech2](https://github.com/ajiratech2) * Prevent aliasing by using dynamic values for shrink(-on-load). [#781](https://github.com/lovell/sharp/issues/781) [@kleisauke](https://github.com/kleisauke) * Expose libvips' "squash" parameter to enable 1-bit TIFF output. [#783](https://github.com/lovell/sharp/pull/783) [@YvesBos](https://github.com/YvesBos) * Add support for rotation using any multiple of +/-90 degrees. [#791](https://github.com/lovell/sharp/pull/791) [@ncoden](https://github.com/ncoden) * Add "jpg" alias to toFormat as shortened form of "jpeg". [#814](https://github.com/lovell/sharp/pull/814) [@jingsam](https://github.com/jingsam) ### v0.17 - "*quill*" Requires libvips v8.4.2. #### v0.17.3 - 1st April 2017 * Allow toBuffer to optionally resolve a Promise with both info and data. [#143](https://github.com/lovell/sharp/issues/143) [@salzhrani](https://github.com/salzhrani) * Create blank image of given width, height, channels and background. [#470](https://github.com/lovell/sharp/issues/470) [@pjarts](https://github.com/pjarts) * Add support for the "nearest" kernel for image reductions. [#732](https://github.com/lovell/sharp/pull/732) [@alice0meta](https://github.com/alice0meta) * Add support for TIFF compression and predictor options. [#738](https://github.com/lovell/sharp/pull/738) [@kristojorg](https://github.com/kristojorg) #### v0.17.2 - 11th February 2017 * Ensure Readable side of Stream can start flowing after Writable side has finished. [#671](https://github.com/lovell/sharp/issues/671) [@danhaller](https://github.com/danhaller) * Expose WebP alpha quality, lossless and near-lossless output options. [#685](https://github.com/lovell/sharp/pull/685) [@rnanwani](https://github.com/rnanwani) #### v0.17.1 - 15th January 2017 * Improve error messages for invalid parameters. [@spikeon](https://github.com/spikeon) [#644](https://github.com/lovell/sharp/pull/644) * Simplify expression for finding vips-cpp libdir. [#656](https://github.com/lovell/sharp/pull/656) * Allow HTTPS-over-HTTP proxy when downloading pre-compiled dependencies. [@wangzhiwei1888](https://github.com/wangzhiwei1888) [#679](https://github.com/lovell/sharp/issues/679) #### v0.17.0 - 11th December 2016 * Drop support for versions of Node prior to v4. * Deprecate the following output format "option" functions: quality, progressive, compressionLevel, withoutAdaptiveFiltering, withoutChromaSubsampling, trellisQuantisation, trellisQuantization, overshootDeringing, optimiseScans and optimizeScans. Access to these is now via output format functions, for example `quality(n)` is now `jpeg({quality: n})` and/or `webp({quality: n})`. * Autoconvert GIF and SVG input to PNG output if no other format is specified. * Expose libvips' "centre" resize option to mimic \*magick's +0.5px convention. [#568](https://github.com/lovell/sharp/issues/568) * Ensure support for embedded base64 PNG and JPEG images within an SVG. [#601](https://github.com/lovell/sharp/issues/601) [@dynamite-ready](https://github.com/dynamite-ready) * Ensure premultiply operation occurs before box filter shrink. [#605](https://github.com/lovell/sharp/issues/605) [@CmdrShepardsPie](https://github.com/CmdrShepardsPie) [@teroparvinen](https://github.com/teroparvinen) * Add support for PNG and WebP tile-based output formats (in addition to JPEG). [#622](https://github.com/lovell/sharp/pull/622) [@ppaskaris](https://github.com/ppaskaris) * Allow use of extend with greyscale input. [#623](https://github.com/lovell/sharp/pull/623) [@ppaskaris](https://github.com/ppaskaris) * Allow non-RGB input to embed/extend onto background with an alpha channel. [#646](https://github.com/lovell/sharp/issues/646) [@DaGaMs](https://github.com/DaGaMs) ### v0.16 - "*pencil*" Requires libvips v8.3.3 #### v0.16.2 - 22nd October 2016 * Restrict readelf usage to Linux only when detecting global libvips version. [#602](https://github.com/lovell/sharp/issues/602) [@caoko](https://github.com/caoko) #### v0.16.1 - 13th October 2016 * C++11 ABI version is now auto-detected, remove sharp-cxx11 installation flag. * Add experimental 'attention' crop strategy. [#295](https://github.com/lovell/sharp/issues/295) * Include .node extension for Meteor's require() implementation. [#537](https://github.com/lovell/sharp/issues/537) [@isjackwild](https://github.com/isjackwild) * Ensure convolution kernel scale is clamped to a minimum value of 1. [#561](https://github.com/lovell/sharp/issues/561) [@abagshaw](https://github.com/abagshaw) * Correct calculation of y-axis placement when overlaying image at a fixed point. [#566](https://github.com/lovell/sharp/issues/566) [@Nateowami](https://github.com/Nateowami) #### v0.16.0 - 18th August 2016 * Add pre-compiled libvips for OS X, ARMv7 and ARMv8. [#312](https://github.com/lovell/sharp/issues/312) * Ensure boolean, bandbool, extractChannel ops occur before sRGB conversion. [#504](https://github.com/lovell/sharp/pull/504) [@mhirsch](https://github.com/mhirsch) * Recalculate factors after WebP shrink-on-load to avoid round-to-zero errors. [#508](https://github.com/lovell/sharp/issues/508) [@asilvas](https://github.com/asilvas) * Prevent boolean errors during extract operation. [#511](https://github.com/lovell/sharp/pull/511) [@mhirsch](https://github.com/mhirsch) * Add joinChannel and toColourspace/toColorspace operations. [#513](https://github.com/lovell/sharp/pull/513) [@mhirsch](https://github.com/mhirsch) * Add support for raw pixel data with boolean and withOverlay operations. [#516](https://github.com/lovell/sharp/pull/516) [@mhirsch](https://github.com/mhirsch) * Prevent bandbool creating a single channel sRGB image. [#519](https://github.com/lovell/sharp/pull/519) [@mhirsch](https://github.com/mhirsch) * Ensure ICC profiles are removed from PNG output unless withMetadata used. [#521](https://github.com/lovell/sharp/issues/521) [@ChrisPinewood](https://github.com/ChrisPinewood) * Add alpha channels, if missing, to overlayWith images. [#540](https://github.com/lovell/sharp/pull/540) [@cmtt](https://github.com/cmtt) * Remove deprecated interpolateWith method - use resize(w, h, { interpolator: ... }) [#310](https://github.com/lovell/sharp/issues/310) ### v0.15 - "*outfit*" Requires libvips v8.3.1 #### v0.15.1 - 12th July 2016 * Concat Stream-based input in single operation for ~+3% perf and less GC. [#429](https://github.com/lovell/sharp/issues/429) [@papandreou](https://github.com/papandreou) * Add alpha channel, if required, before extend operation. [#439](https://github.com/lovell/sharp/pull/439) [@frulo](https://github.com/frulo) * Allow overlay image to be repeated across entire image via tile option. [#443](https://github.com/lovell/sharp/pull/443) [@lemnisk8](https://github.com/lemnisk8) * Add cutout option to overlayWith feature, applies only the alpha channel of the overlay image. [#448](https://github.com/lovell/sharp/pull/448) [@kleisauke](https://github.com/kleisauke) * Ensure scaling factors are calculated independently to prevent rounding errors. [#452](https://github.com/lovell/sharp/issues/452) [@puzrin](https://github.com/puzrin) * Add --sharp-cxx11 flag to compile with gcc's new C++11 ABI. [#456](https://github.com/lovell/sharp/pull/456) [@kapouer](https://github.com/kapouer) * Add top/left offset support to overlayWith operation. [#473](https://github.com/lovell/sharp/pull/473) [@rnanwani](https://github.com/rnanwani) * Add convolve operation for kernel-based convolution. [#479](https://github.com/lovell/sharp/pull/479) [@mhirsch](https://github.com/mhirsch) * Add greyscale option to threshold operation for colourspace conversion control. [#480](https://github.com/lovell/sharp/pull/480) [@mhirsch](https://github.com/mhirsch) * Ensure ICC profiles are licenced for distribution. [#486](https://github.com/lovell/sharp/issues/486) [@kapouer](https://github.com/kapouer) * Allow images with an alpha channel to work with LAB-colourspace based sharpen. [#490](https://github.com/lovell/sharp/issues/490) [@jwagner](https://github.com/jwagner) * Add trim operation to remove "boring" edges. [#492](https://github.com/lovell/sharp/pull/492) [@kleisauke](https://github.com/kleisauke) * Add bandbool feature for channel-wise boolean operations. [#496](https://github.com/lovell/sharp/pull/496) [@mhirsch](https://github.com/mhirsch) * Add extractChannel operation to extract a channel from an image. [#497](https://github.com/lovell/sharp/pull/497) [@mhirsch](https://github.com/mhirsch) * Add ability to read and write native libvips .v files. [#500](https://github.com/lovell/sharp/pull/500) [@mhirsch](https://github.com/mhirsch) * Add boolean feature for bitwise image operations. [#501](https://github.com/lovell/sharp/pull/501) [@mhirsch](https://github.com/mhirsch) #### v0.15.0 - 21st May 2016 * Use libvips' new Lanczos 3 kernel as default for image reduction. Deprecate interpolateWith method, now provided as a resize option. [#310](https://github.com/lovell/sharp/issues/310) [@jcupitt](https://github.com/jcupitt) * Take advantage of libvips v8.3 features. Add support for libvips' new GIF and SVG loaders. Pre-built binaries now include giflib and librsvg, exclude *magick. Use shrink-on-load for WebP input. Break existing sharpen API to accept sigma and improve precision. [#369](https://github.com/lovell/sharp/issues/369) * Remove unnecessary (un)premultiply operations when not resizing/compositing. [#413](https://github.com/lovell/sharp/issues/413) [@jardakotesovec](https://github.com/jardakotesovec) ### v0.14 - "*needle*" Requires libvips v8.2.3 #### v0.14.1 - 16th April 2016 * Allow removal of limitation on input pixel count via limitInputPixels. Use with care. [#250](https://github.com/lovell/sharp/issues/250) [#316](https://github.com/lovell/sharp/pull/316) [@anandthakker](https://github.com/anandthakker) [@kentongray](https://github.com/kentongray) * Use final output image for metadata passed to callback. [#399](https://github.com/lovell/sharp/pull/399) [@salzhrani](https://github.com/salzhrani) * Add support for writing tiled images to a zip container. [#402](https://github.com/lovell/sharp/pull/402) [@felixbuenemann](https://github.com/felixbuenemann) * Allow use of embed with 1 and 2 channel images. [#411](https://github.com/lovell/sharp/issues/411) [@janaz](https://github.com/janaz) * Improve Electron compatibility by allowing node-gyp rebuilds without npm. [#412](https://github.com/lovell/sharp/issues/412) [@nouh](https://github.com/nouh) #### v0.14.0 - 2nd April 2016 * Add ability to extend (pad) the edges of an image. [#128](https://github.com/lovell/sharp/issues/128) [@blowsie](https://github.com/blowsie) * Add support for Zoomify and Google tile layouts. Breaks existing tile API. [#223](https://github.com/lovell/sharp/issues/223) [@bdunnette](https://github.com/bdunnette) * Improvements to overlayWith: differing sizes/formats, gravity, buffer input. [#239](https://github.com/lovell/sharp/issues/239) [@chrisriley](https://github.com/chrisriley) * Add entropy-based crop strategy to remove least interesting edges. [#295](https://github.com/lovell/sharp/issues/295) [@rightaway](https://github.com/rightaway) * Expose density metadata; set density of images from vector input. [#338](https://github.com/lovell/sharp/issues/338) [@lookfirst](https://github.com/lookfirst) * Emit post-processing 'info' event for Stream output. [#367](https://github.com/lovell/sharp/issues/367) [@salzhrani](https://github.com/salzhrani) * Ensure output image EXIF Orientation values are within 1-8 range. [#385](https://github.com/lovell/sharp/pull/385) [@jtobinisaniceguy](https://github.com/jtobinisaniceguy) * Ensure ratios are not swapped when rotating 90/270 and ignoring aspect. [#387](https://github.com/lovell/sharp/issues/387) [@kleisauke](https://github.com/kleisauke) * Remove deprecated style of calling extract API. Breaks calls using positional arguments. [#276](https://github.com/lovell/sharp/issues/276) ### v0.13 - "*mind*" Requires libvips v8.2.2 #### v0.13.1 - 27th February 2016 * Fix embedding onto transparent backgrounds; regression introduced in v0.13.0. [#366](https://github.com/lovell/sharp/issues/366) [@diegocsandrim](https://github.com/diegocsandrim) #### v0.13.0 - 15th February 2016 * Improve vector image support by allowing control of density/DPI. Switch pre-built libs from Imagemagick to Graphicsmagick. [#110](https://github.com/lovell/sharp/issues/110) [@bradisbell](https://github.com/bradisbell) * Add support for raw, uncompressed pixel Buffer/Stream input. [#220](https://github.com/lovell/sharp/issues/220) [@mikemorris](https://github.com/mikemorris) * Switch from libvips' C to C++ bindings, requires upgrade to v8.2.2. [#299](https://github.com/lovell/sharp/issues/299) * Control number of open files in libvips' cache; breaks existing `cache` behaviour. [#315](https://github.com/lovell/sharp/issues/315) [@impomezia](https://github.com/impomezia) * Ensure 16-bit input images can be normalised and embedded onto transparent backgrounds. [#339](https://github.com/lovell/sharp/issues/339) [#340](https://github.com/lovell/sharp/issues/340) [@janaz](https://github.com/janaz) * Ensure selected format takes precedence over any unknown output filename extension. [#344](https://github.com/lovell/sharp/issues/344) [@ubaltaci](https://github.com/ubaltaci) * Add support for libvips' PBM, PGM, PPM and FITS image format loaders. [#347](https://github.com/lovell/sharp/issues/347) [@oaleynik](https://github.com/oaleynik) * Ensure default crop gravity is center/centre. [#351](https://github.com/lovell/sharp/pull/351) [@joelmukuthu](https://github.com/joelmukuthu) * Improve support for musl libc systems e.g. Alpine Linux. [#354](https://github.com/lovell/sharp/issues/354) [#359](https://github.com/lovell/sharp/pull/359) [@download13](https://github.com/download13) [@wjordan](https://github.com/wjordan) * Small optimisation when reducing by an integral factor to favour shrink over affine. * Add support for gamma correction of images with an alpha channel. ### v0.12 - "*look*" Requires libvips v8.2.0 #### v0.12.2 - 16th January 2016 * Upgrade libvips to v8.2.0 for improved vips_shrink. * Add pre-compiled libvips for ARMv6+ CPUs. * Ensure 16-bit input images work with embed option. [#325](https://github.com/lovell/sharp/issues/325) [@janaz](https://github.com/janaz) * Allow compilation with gmake to provide FreeBSD support. [#326](https://github.com/lovell/sharp/issues/326) [@c0decafe](https://github.com/c0decafe) * Attempt to remove temporary file after installation. [#331](https://github.com/lovell/sharp/issues/331) [@dtoubelis](https://github.com/dtoubelis) #### v0.12.1 - 12th December 2015 * Allow use of SIMD vector instructions (via liborc) to be toggled on/off. [#172](https://github.com/lovell/sharp/issues/172) [@bkw](https://github.com/bkw) [@puzrin](https://github.com/puzrin) * Ensure embedded ICC profiles output with perceptual intent. [#321](https://github.com/lovell/sharp/issues/321) [@vlapo](https://github.com/vlapo) * Use the NPM-configured HTTPS proxy, if any, for binary downloads. #### v0.12.0 - 23rd November 2015 * Bundle pre-compiled libvips and its dependencies for 64-bit Linux and Windows. [#42](https://github.com/lovell/sharp/issues/42) * Take advantage of libvips v8.1.0+ features. [#152](https://github.com/lovell/sharp/issues/152) * Add support for 64-bit Windows. Drop support for 32-bit Windows. [#224](https://github.com/lovell/sharp/issues/224) [@sabrehagen](https://github.com/sabrehagen) * Switch default interpolator to bicubic. [#289](https://github.com/lovell/sharp/issues/289) [@mahnunchik](https://github.com/mahnunchik) * Pre-extract rotatation should not swap width/height. [#296](https://github.com/lovell/sharp/issues/296) [@asilvas](https://github.com/asilvas) * Ensure 16-bit+alpha input images are (un)premultiplied correctly. [#301](https://github.com/lovell/sharp/issues/301) [@izaakschroeder](https://github.com/izaakschroeder) * Add `threshold` operation. [#303](https://github.com/lovell/sharp/pull/303) [@dacarley](https://github.com/dacarley) * Add `negate` operation. [#306](https://github.com/lovell/sharp/pull/306) [@dacarley](https://github.com/dacarley) * Support `options` Object with existing `extract` operation. [#309](https://github.com/lovell/sharp/pull/309) [@papandreou](https://github.com/papandreou) ### v0.11 - "*knife*" #### v0.11.4 - 5th November 2015 * Add corners, e.g. `northeast`, to existing `gravity` option. [#291](https://github.com/lovell/sharp/pull/291) [@brandonaaron](https://github.com/brandonaaron) * Ensure correct auto-rotation for EXIF Orientation values 2 and 4. [#288](https://github.com/lovell/sharp/pull/288) [@brandonaaron](https://github.com/brandonaaron) * Make static linking possible via `--runtime_link` install option. [#287](https://github.com/lovell/sharp/pull/287) [@vlapo](https://github.com/vlapo) #### v0.11.3 - 8th September 2015 * Intrepret blurSigma, sharpenFlat, and sharpenJagged as double precision. [#263](https://github.com/lovell/sharp/pull/263) [@chrisriley](https://github.com/chrisriley) #### v0.11.2 - 28th August 2015 * Allow crop gravity to be provided as a String. [#255](https://github.com/lovell/sharp/pull/255) [@papandreou](https://github.com/papandreou) * Add support for io.js v3 and Node v4. [#246](https://github.com/lovell/sharp/issues/246) #### v0.11.1 - 12th August 2015 * Silence MSVC warning: "C4530: C++ exception handler used, but unwind semantics are not enabled". [#244](https://github.com/lovell/sharp/pull/244) [@TheThing](https://github.com/TheThing) * Suppress gamma correction for input image with alpha transparency. [#249](https://github.com/lovell/sharp/issues/249) [@compeak](https://github.com/compeak) #### v0.11.0 - 15th July 2015 * Allow alpha transparency compositing via new `overlayWith` method. [#97](https://github.com/lovell/sharp/issues/97) [@gasi](https://github.com/gasi) * Expose raw ICC profile data as a Buffer when using `metadata`. [#129](https://github.com/lovell/sharp/issues/129) [@homerjam](https://github.com/homerjam) * Allow image header updates via a parameter passed to existing `withMetadata` method. Provide initial support for EXIF `Orientation` tag, which if present is now removed when using `rotate`, `flip` or `flop`. [#189](https://github.com/lovell/sharp/issues/189) [@h2non](https://github.com/h2non) * Tighten constructor parameter checks. [#221](https://github.com/lovell/sharp/issues/221) [@mikemorris](https://github.com/mikemorris) * Allow one input Stream to be shared with two or more output Streams via new `clone` method. [#235](https://github.com/lovell/sharp/issues/235) [@jaubourg](https://github.com/jaubourg) * Use `round` instead of `floor` when auto-scaling dimensions to avoid floating-point rounding errors. [#238](https://github.com/lovell/sharp/issues/238) [@richardadjogah](https://github.com/richardadjogah) ### v0.10 - "*judgment*" #### v0.10.1 - 1st June 2015 * Allow embed of image with alpha transparency onto non-transparent background. [#204](https://github.com/lovell/sharp/issues/204) [@mikemliu](https://github.com/mikemliu) * Include C standard library for `atoi` as Xcode 6.3 appears to no longer do this. [#228](https://github.com/lovell/sharp/issues/228) [@doggan](https://github.com/doggan) #### v0.10.0 - 23rd April 2015 * Add support for Windows (x86). [#19](https://github.com/lovell/sharp/issues/19) [@DullReferenceException](https://github.com/DullReferenceException) [@itsananderson](https://github.com/itsananderson) * Add support for Openslide input and DeepZoom output. [#146](https://github.com/lovell/sharp/issues/146) [@mvictoras](https://github.com/mvictoras) * Allow arbitrary aspect ratios when resizing images via new `ignoreAspectRatio` method. [#192](https://github.com/lovell/sharp/issues/192) [@skedastik](https://github.com/skedastik) * Enhance output image contrast by stretching its luminance to cover the full dynamic range via new `normalize` method. [#194](https://github.com/lovell/sharp/issues/194) [@bkw](https://github.com/bkw) [@codingforce](https://github.com/codingforce)